Coordination Funds

通过对几何零件偏差及其来源的理解和对技术产品功能和质量影响的研究，构建了计划研究单元“基于虚拟计算机辅助工程工具的面向过程的公差管理”的框架。本研究单元的目的是提供整体的方法和有效的工具，以全面管理产品起源过程中的几何偏差，这将在一个模型工厂进行验证。在这样做的过程中，一个特别的重点是制定一个程序，以便参与几何变化管理的所有部门，从产品开发到制造和计量，进行富有成效的合作，这将使公司能够快速指定功能公差，这些公差是可制造和可测量的，从而节省成本并缩短上市时间。在这方面，研究单位的设想是使产品开发、制造和计量学在计算机辅助公差方面能够密切合作，即联合拟订可制造和可测量的功能公差。通过实现这种紧密的协作，在虚拟产品和工艺开发的早期阶段，就可以考虑到所有与产品功能和质量有关的后期问题的制造相关来源。因此，可以有效地指定公差并优化检查计划，以及可以确定稳健的制造和操作窗口，从而可以以低成本生产和测量稳健的产品。由于几何零件偏差是不可避免的，影响技术产品的功能和质量，因此在产品起源过程中对其进行管理是开发符合客户质量和使用要求的功能产品并在国际市场上取得成功的必要条件。因此，研究单位第二个资助期的重点是在面向过程的公差分配中特别考虑与操作有关的磨损。科学挑战是获取磨损信息，将其转换为数学模型，并随后集成到公差分析和优化中。最后，这允许分配符合生产和测试的公差，以确保技术产品在整个预期产品生命周期内的功能。因此，研究单位的科学发现和可转让的普遍适用的方法对德国经济的成功作出了宝贵的贡献。

The comprehension of geometric part deviations and their sources as well as the investigation of their effects on the function and quality of technical products builds the framework for the planned research unit “process-oriented tolerance management based on virtual computer-aided engineering tools”. The aim of this research unit is the provision of holistic methods and efficient tools for the comprehensive management of geometric deviations along the product origination process, which are to be validated in a model factory. In doing so, a particular focus is set on the development of a procedure for the fruitful cooperation of all departments involved in geometric variations management, from product development, to manufacturing and to metrology, which will enable companies to quickly specify functional tolerances, which are manufacturable and measurable, and consequently to save costs and to reduce the time to market. In this regard, the vision of the research unit is to enable the close collaboration of product development, manufacturing and metrology in computer-aided tolerancing, i. e. the joint formulation of functional tolerances, which are manufacturable and measurable. By enabling this close collaboration, all manufacturing related sources of later problems regarding the product function and quality can be considered already during early phases of virtual product and process development. As a consequence, tolerances can be specified efficiently and optimized inspection plans as well as robust manufacturing and operating windows can be identified, which allows the development of robust products to be manufactured and measured at low costs. Since geometric part deviations are inevitable and affect the function and quality of technical products, their management along the product origination process is essential for the development of functioning products, which conform to the quality and usage requirements of customers and are successful on international markets.The focus of the second funding period of the research unit is therefore particularly on the consideration of operation-related wear during the process-oriented tolerance allocation. The scientific challenge is the acquisition of wear information, its transformation into mathematical models and the subsequent integration into tolerance analysis and optimization. Finally, this allows the assignment of production- and test-compliant tolerances which ensure the functionality of technical products over the entire intended product lifetime. The scientific findings and the transferable generally applicable methods of the research unit thus make a valuable contribution to the success of the German economy.